George tappan francis



I (No Modal.)

G. T. FRANCIS; GUIDE POST CLAMP;

UNITED STATES PATENT OFFICE.

GEORGE TAPPAN FRANCIS, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE- I'IALF TOTHE STANDARD ELEVATOR COMPANY, OF SAME PLACE.

GUIDE-POST CLAMP.

SPECIFICATION forming part of Letters Patent No. 505,515, datedSeptember 26,1893.

Application filed March 2'7, 18913.

To all whom it may concern:

Be it known that I, GEORGE TAPPAN FRAN- Cls,a citizen of the UnitedStates, residing at Chicago, in the county of Cook and State ofIllinois, have invented new and useful Improvements in Guide-Post-Clampin g Devices,

of which the following is a specification.

This invention relates to guide posts for elevators. Its object is tosimplify and render more economical the erection of guide posts invarious locations. I

The invention consists substantially in the construction set forth inthe succeeding specification, illustrated in the accompanying drawings,and more particularly pointed out in the claims.

Like letters of reference are used to designate similar parts in theseveral figures of the drawings, in Which- Figure 1, is a side elevationof two guide posts in position above and below an I-beam. Fig. 2, is anedge elevation of the same. Fig. 3, is a view of one end of a guide postembodying my invention and Fig. 4, is a view of the other end of suchguide post partly in cross section and clamped to anI-beam.

Heretofore guide posts most commonly have been secured to the I-beams inthe building by drilling holes and fastening such post and I-beamtogether by bolts. Such a construction was quite expensive and verytedious, and more recently this plan of construction has been abandoned,by at least one manufacturer of elevators, to wit., the StandardElevator Company, of Chicago, the assignee of the present application,and in lieu thereof the guide-posts have been cast with lugs or had lugspermanently fastened thereto near the ends, and provided with clampingbolts which latter were adapted. to hook over the flanges of theI-beams, substantially as shown in the accompanying drawings.

In practice I have found that the lengths of guide posts required fordifferent buildings vary considerably, and therefore that a manufacturerwould be obliged to keep on hand a large number of posts of differentlengths and this necessity has been found burden-- some andinconvenient. I have also found that when the lugs were cast with theguide- Serial No. 67,891. (No model.)

posts itsome times happened that such posts shrunk somewhat unevenly, sothat while the lug on one post might have its bearing surface flush withthe end of the post, on another post such lug might not be flush withthe end of the post, and therefore in use there would be an undue strainupon the lug and clamp bolts.

The object of the present invention is to avoid the necessity ofcarrying a number of different lengths of stock posts and to simplifyand render more economical the erection ofthe guide posts. The manner inwhich this is accomplished will now be described. I propose to keep onhand posts of an abnormal length, and cast the same with lugs forclamping bolts, only at one end, which end is illustrated in theaccompanying drawings in Fig. 4, and on the upper post in Figs. 1 and 2.The other ends of these same posts are to be cast without lugs, orperfectly plain as is shown on the lower posts in Figs. 1 and 2 of thedrawings. I prefer to face such. ends of the posts, which in the presentinstance are shown as the upper ends, perfectly fiat, so that they willbe adapted to have attached to them lugs for clamping bolts, as will behereinafter described, and these flat surfaces I prefer to have extendin the direction of the length of the post ten inches more or less. I

have-designated the end of the post having the lug cast thereon orpermanently affixed thereto by the letter B, and the end of the postcast plain with no lug, by the letter B. I have designated the lug castto the post by the letter C and the detachable lug by the letter C; andhavedesignated the clamping bolts or hooks by the letters a, a. TheI-beam is designated by the letter A, wherever it is shown in thedrawings. The detachable lug for the clamping bolts or hooks may besecured to the plain surface of the guide post near one end thereof byany suitable fastening device, but I have shown in the accompanyingdrawings, and found in practice that a bolt b with a head on one end anda nut upon the other is well adapted for this purpose, and in such casethe lug C should have an elongated slot or hole formed for the passageof the bolt so that the lug may be located or placed upon the end of thepost in such manner that its lower surface will be flush with the end ofthe post and thus form a firm bearing upon the head of the I-beam, andrelieve the fastening device or the clamping hooks from undue strain.The elongated slots in the lugs are designated in the drawingsby theletter 0.

It is manifest from the above description that if the manufacturer issupplied with posts of a length as great as is apt to be ever requiredin any ordinary building, such posts may be readily adapted forconvenient erection in any of such buildings even though the storiesthereof may somewhat vary in distance apart, because after taking themeasure of the post required for any particular building, all of theposts to be used therein may be readilysawed off at their plain ends,where they have no lugs, until the requisite length is secured and thenthe detachable lugs may be secured to such ends in the mannerhereinbefore set forth, and the post will be ready for erection withoutfurther alteration.

In consequence of the construction I have just described, themanufacturer will not be required to keep a large number of stock postsof various lengths. Figs. 1 and 2 of the drawings illustrate the mannerin which the posts are applied to the I-beam when one end of the posthas a permanent lug fixed thereto, and the other end has a removablelug. In these figures the letter B represents the end of the post whichhas the lug for the clamping post cast with it, or permanently fixed toit, and the letter B designates the end of the post which is cast plainwithout lugs; and which as shown, has the lug attached to it after thepost has been sawed to the proper length for the situation in which itis to be used.

In the drawings the lower end of one post is'shown and the upper end ofthe other; but it will be understood that each post is formed alike.

Thus far each post has been described as having a permanent lug and aremovable lug each provided with clamping devices, but it will bemanifest that although this is the preferable construction, yet bothends of each post might be provided with removable lugs.

It is obvious that many other variations may be made in the details ofthe present invention without departing from the principle thereof, andI, therefore, do not wish to be understood as confining myself to theexact construction shown anddescribed.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. A guide post for elevators provided at one end with a clamping devicepermanently secured thereto, and at the other end with a clamping deviceremovably secured thereto, whereby the guide post may be readily clampedto an eye-beam and adjusted as to length; substantially as and for thepurpose set forth.

2. A guide post for elevators having at one end a permanent lug havingadjustable bolts secured thereto, and at its other end a removable lughaving similar bolts; substantially as and for the purpose set forth.

3. In a guide post for elevators the combi-' nation of the main body ofthe post, having the side faces of one end flat, such faces extendingsome little distance back of the end of such post, with lugs containingclamping hooks or bolts and. mechanism for securing the same to suchmain body; substantially as and for the purpose set forth.

4. In a guide post for elevators the combination of the main body of thepost having the sides of one end faced so as to afford a fiat surfacewhich extends some little distance back of the end thereof, with lugscontaining clamping bolts or hooks and a bolt for securing them to themain body of the guide post; substantially as and for the purpose setforth.

5. In a guide post for'elevators the combination of the main body of thepost with lugs containing clamping hooks or bolts secured to such mainbody, and adjustable thereonin the direction of the length of such bodyof the post; substantially as and for the purpose set forth.

6. In a guide post for elevators the combination of the main body of thepost, having its sides near one end faced fiat, with lugs. containingclamping hooks or bolts and provided with elongated holes or aperturesand a securing bolt passing through the lugs and the main body of thepost whereby such lugs may be adj ustably secured to such main body ofthe post in reference to the length thereof; substantially as and forthe purpose set forth.

GEORGE TAPPAN FRANCIS.

Witnesses:

N ELLIS HARRIS, J AS. LAWRENCE GERRY.

IOC

